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There are many eager iPhone 4S users waiting for iPhone hacker @pod2g to jailbreak. Earlier today we reported about his update regarding caching issues he was experiencing with the 4S jailbreak. It seems that the obstacle has been overcome. In an update to his blog post, the iPhone hacker acknowledged that he had solved the A5 chip cache issue, which means the iPhone 4S jailbreak is in its final stretch.

His recent blog post mentioned the following:

I discussed with @saurik today about the launched boot process, and he’s found one missing piece of the puzzle I needed to have a perfectly stable jailbreak. He’s definitely one of the best iOS gurus out there. Thank you saurik!

It appears that the untethered jailbreak stability was fixed alongside with the caching issues. Previously, it was uncertain how much time the fix would require but it turned out to be a quicker fix than expected. This gives us the impression that the iPhone 4S untethered jailbreak is nearing completion with a release date rumored to be set around Christmas time.

What is left unconfirmed is whether or not the iPhone hacker has a working tethered jailbreak for the iPhone 4S. Many people seem to be willing to settle for a tethered jailbreak while waiting on an untethered one, as any jailbreak beats none. With work progressing quickly though, everyone has high hopes of quick release. As usual, we will keep you updated with the latest news. You can stay tuned by checking back on the site and/or following us on Twitter (@ModMyi).

this is so good! all i want for christmas is you! (you being the untether ).
good work to everyone who was involved in this jb. hopefully the exploit musclenerd showed a month or two ago that jailbroke the 4s is a completely different exploit and that it can be used in 5.1 cause thats just around the corner aswell. the only reason i see that pod2g wouldnt be holding back this untether for 5.1 would be that it is patched and wont work. once again, great work to these guys, legends! if this jb works on the ipad 2, it might just be enough for me to get one..

i also wonder what tool it is going to use (redsn0w, greenpois0n, etc) or if he's going to chuck it into his own tool!

A tethered jailbreak requires a bootrom exploit and currently the 4S and the iPad 2 have no known bootrom exploit. So therefore a userland exploit is needed like the one @pod2g is working on for his untethered jailbreak.

this may be a stupid question, but wouldn't it be kind of counterproductive to release the JB before apple releases 5.1? then they would just patch it? Or do we know that 5.1 will be released right around that same time?

Where is the unteathered jailbreak for all the other iphones? Thats suppose to be finished so why dont they release it?

Because it uses the same exploit as the one being used for the 4S and iPad 2 which is not ready. Releasing it now for the others could mean Apple patching it before it is ready for the A5 devices.

Originally Posted by mmc1085

this may be a stupid question, but wouldn't it be kind of counterproductive to release the JB before apple releases 5.1? then they would just patch it? Or do we know that 5.1 will be released right around that same time?

Nobody knows when 5.1 will be released though. If 5.1 had anything worthwhile in it I would ask the same question. But from what we have seen from the betas so far 5.1 is not very different at all from 5.0.1.